Heeling-machine



J. H. POPE.

HEELING MACHINE. I Arrucmorq FILED APR.24.-l9l8.

Patented Feb. 17,1920.

.2 SHEETS-SHEEI '2.

UNITED STATESPATENT OFFICE.

JOSEPH POPE, OF HAMILTOZN', MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY CORPORATION, OF PATERSON, NEW JERSEY, CORPORATION OF NEWJERSEY. 7

ToaZZ whom it may concern:

Be it known that L'JOSEPH H. POPE, -'a

Hamilton, in the county of Essex and State of Massachusetts, haveinvented certain Improvements in Heeling-Machine's, ofwhich thefollowing description, in connection with the accompanying drawmgs, isa-specification, like'reference characterson the drawings indicatinglike parts in the several figures.

This invention relates-to heehng machines,

and more particularly to 'machines for at-. taching-heels and top liftsto boots shoes, the present application being a d1v1-- sion ofapplication Serial No. 81,873, filed March 8, 1916.

An important feature of the present 1nvention consists in a heeland'toplift'holder provided with automatic mechanism for presenting atoplift in operative posltion after the heel has been nailed. shown theholder islatched under spring tension prior to the heel attachingoperation and is released by the movement of a latching lever effectedautomatically after the attaching operation.

Another feature'of the invention s comprised in a locking device for theloader which is arranged to be controlled by the movement of the heeland toplift holder,

the construction being such-that when one load of nails has beendelivered by the loader to the die plate of the machine, movement of theloader to deliver a second load i new heel in attaching position.

The invention further contemplates, in combination with a'nail blockforsupplyino nails to the loader and mechanism whici operates to advancethe block, a locking device for such mechanism so arranged that movementof the block to deliver a second load of nails is prevented until theloader has been moved to discharge the previous load, and a lockingdevice for the loader which is controlled bythe heel and tophft holder.

Another feature of the invention relatesto improved mechanism forautomatically measuring the work preliminarily to the power operation ofthe machine. As herein of action.

As herein HEELING-MACHINE. I

Original application filed Marchv 3, 1916,.Scrial No. 81,873. -Dividedand this 1918. Serial No; 230,428.

application filed April 24,

shown a spring acting in compression is i utilized as a source of motivepower for the citizen of the United States, residing at" measuringmechanism, the spring being coiled upona tube and compressed during thepower operation of the machine. This construction has proved to besuperior to that heretofore employed wherein a tension spring served asthe source of motive power, both in point of durability and uniformityStill another feature of the invention consists'. in safety mechanismfor preventing either the measuring operation or the power actuationof-the machine from taking place unless the jack has been moved into itsoperative position.

These and other features of the invention, including important detailsof construction and combinations of parts will be best understood fromthe following description of a preferred embodiment of the invention, inconnection with the accompanying drawings illustrating the same, inwhich Figure 1 is a view in front elevation of the well known Lightningnailing machine having the present invention embodied therein;

Fig. 2 is a detail view inperspective of portions of the automaticmeasuring mechanism;

Fig. 3 is a view in perspective illustrating the heel and toplift holderoperating mechanism and the safety locking devices, and

Fig. 4 is a detail view of a portion of the safety locking mechanism.

.The machine frame 2 carries a stationary die plate 4: having a seriesof passages, as shownin Fig. 3, for the drivers. Beneath the die plateis located the jack 6 upon which the lasted shoe is placed preparatoryto the operation of the machine, the heel to be nailed being held inplace upon the under side of the die plate by clamping arms 7. A drivergang 8 is mounted in a cross head 10 carried at the upper ends of thetwo side rods 12 which are arranged to reciprocate in vertical bearingsin the machine frame. Secured to the lower ends of the side rods is asecond cross head to which motion is imparted from the main shaft 18through an eccentric strap 16.

To the front portion of the machine frame 2 is secured a stationaryblock 20 above which is located the ack carriage support 22. The latteris arranged for a limlted vertical movement in a vertical guidewayformed partly in the machine frame and partly by gibs bolted thereto.The support 22 and all the parts carried thereby, including the jack,are moved vertically by power driven means when the machine is started'and after the measuring operation has taken place. For this purpose apair of eccentric cams are mounted one in the stationary block 20 andthe other in the support 22. These areoscillated by-connections with theside rods during the initial part of the downward movement of the crosshead. In the present drawings the connecting mechanism is omitted forthe sake of clearness, being substantially the same as correspondingmechanism disclosed in my prior Patent No. 446,885, dated February 24,1891.

Above the jack carriage support 22 and guided in the same ways as thelatter, is 10- cated the jack carriage 24. The vertical position of thecarriage is determined by a large screw 26 threaded at its upper endinto the carriage and resting at its lower head on the "jack carriagesupport 22. The screw 26 is provided with elongated gear teeth meshingwith a horizontally movable rack 28 by the actuation of which themeasuring operation is effected as will be presently described. The jackcarriage 24 is formed at its upper side with substantially horizontalguideways in which slides the jack 6. It will be understood that thejack is pulled forwardly in the ways to receive a shoe and then pushedrearwardly into operative position beneath the die plate prelimi narilyto starting the machine.-

The mechanism thus far described is subrack 28 in carrying out themeasuring operation consists 1n a long spring 42 acting in compression.The spring is-arranged to encircle a tube 50, see Fig. 2, which issecured at its upper end to a bracket 52 bolted on, a vertically movablebar 54. The tube 50 has a flange 48 at its lower end upon whichthespring 42 rests. Loosely mounted to telescope Within the tube 50 is arod 49 which is secured at its'lower end to the machine frame andprovided atits upper end with 'a cross pin projecting outwardly througha slot in the tube 50"and seated in a collar 46 bearing upon the upperend of the spring 42. 7 It will 'be' seen that, when the two telescopicmembers 49 and 50 are elongated by the upward movement of the tube 50,the spring 42 is compressed between the flange 48 and the collar 46.This takes place when the bar 54-is moved upwardly by the power of themachine, the bar being latched in its upper position with the spring 42held under compression.

The bar 54 is guided for vertical movement at its upper end by passingthrough a vertical'opening in a box 56 rigidly boltthe bar54'is-pivotally connected to one arm of a triangular lever 30 pivoted upon'a stud 58 projectingfrom the stationary block 20.

. The bar 54 extends below its;point of connection with the lever .30and is slotted to receive a spring 60 which permits lost motion to occurbetween the bar 54 and the lever 30 when the rod is moved upwardly bythe power of the machine as will presently appear. The lever 30 isconnected through a shortlink 29 to the rack 28. It will be apparentthat when the bar 54 is ed to the left side rod 12. At its lower end aelevated and the spring 42 compressed the rack 28 will bemoved to theright and the screw 26 turned in the direction to lower the jack 6. Onthe other hand, when the bar 54 is tripped, and the spring 42 permittedto expand and move the bar 54 downwardly,

the rack 28 will be moved to the left through the connections described.and'the jack elerated to efl'ect the measuring operation.

The bar 54 is provided near its upper end and upon its rear side with acatch or shoulder 62. The box 56 carries a pivoted dog 64 which isarranged to engage the shoulder 62 in the upward movement of the siderod carrying the bar 54 upwardly and holding it in the position shown inFig. 1 with the. spring 42 under compression. The

starting lever 66 or" the machine has connections with the dog 64 suchthat in its initial. movement the dog is disengaged from the shoulder 62whereupon the bar 54 is free to move downwardly under the actuation ofthe spring 42 thus effecting the measuring operation as above outlined.

The starting lever 66 is connected through atreadle rod 72 to a treadle70 by which the operator initiates the measuring operation. The startinglever 66 is also connected to the main clutch of the machine bymechanism not here illustrated but which corresponds to that of myearlier patent above identified. The arrangement is such that thecontinued depression of the treadle, after the measuring operation hasbeen eifected, throws the .clutch and starts the power operation of themachine.

In the usual operation of the machine "bar 54 temporarily to depress thejack and thus afford opportunity to adjust the'position of the heel orshoe before the attaching nails are driven. To this enda lever ismounted upon the stud 58 of the lever 30 and is so arranged that it canbe swung upwardly to turn the lever 30 in a clockwise direction bycoming into engagement with the'pivot pin by-which the lever 30 isconnected to the bar 54. The inner end of the lever 44' normallyprojects beneath the pin 21 set in the block 20 which acts as a stop forthe lever 30 and also for the lever 14. During the normal operation ofthe machine the lever 44 remains at, rest in .the position wardly toposition the work properly, a

safety lever 74 is pivotally mounted on an arm projecting from one ofthe gibs of the machine frame. and arranged to stand normally with itsinner arm in the path of the jack 6. The outerand shorter arm of thelever 74 extends under a locking piece 7 6 rigidly secured to the upperend of the treadle rod 72. A spring pressed pin 78 bears upon the rearside of the inner arm of the lever 74 andswings it normally into lockingrelation with the piece 7 6 as shown in Fig. 2. hen the jack, however,is pushed inwardly into operative position it encounters the lever 74and swings its outer end forwardly into a position in which the lockingpiece 7 6 willclear it when the treadle is depressed.

The position of the shoe upon the'jack is controlled from front to rearby aback gage80 adjustably mounted in the machine frame beneath the dieplate 4. The back gage 80 is carried by a horizontally disposed screwhaving a beveled gear 82 secured thereto 7 and arranged to mesh with abeveled gear 84 upon the rearend of a shaft 86 h'avinga knurled head atits outer end. The shaft 86 is j ournaled inbearings formed in a collar88 which surrounds the right side-rod and rests upon the upper part of.the machine frame.

The shaft extends obliquely inwardly to the back gage, itshead or 'handnut' being located conveniently within the reach of the operator.

An oscillating heel and toplift holder is pivotally mounted at thev rearof the die plate 4 and arranged to present the heel andtoplift blankssuccessively in position be:

neath th'efdriverpassages. The holderin-I .cludes a pairoftopliftflclamping arms 90 "and a pair of heel engaging arms 7.

, will be displaced inwardl spanker plate 91 is disposed above the top-1 lift clamping arms 90 and arranged to be interposed between thetoplift and the lower sition the holder is positioned with the heelclamping arms 7 beneath the die plate and the top lift clamping arms 90projecting toward the right hand side of the machine. The holder isprovided with an arm 9:2, see Fig. 2, extending rearwardly'and carryinga downwardly projecting rod 94 connected at its lower end to ahorizontally extending rod 96. The rod 96 has an adjustable turn bucklein its length and is pivotally connected to the rear end of a lever 98pivotally mounted on a stud 100. The stud 100 projects downwardly from abracket 102 carried by the collar 88. The stud 10.0 is

encircled by a torsion spring 104 which tends normally to throw the rearend of the lever toward the right and, through the connections abovedescribed, to turn the toplift clamping arn1s 90 into position beneaththe die plate 4. This action of the spring 104, however, is preventedduring a portion of the cycle of the machine by a latch lever 106pivoted upon a horizontal stud 108 to the frame of the machine. Thelever 106 has a horizontal arm which is arrangedto engage with the flatside of a pin 110 set in the handle or front end. of the lever 98. Thelever 98 is made in two pieces which are arranged to have a limitedrelative movement in a horizontal plane. The forward end of the rearpart of the lever 98 is provided with a cased spring 112 which tendsnormally to swingthe handle endof the lever inwardly when permitted todo so.

The latching lever 106 is lifted automatically to disengage the pin 110during the upward movement of the side rod 12 at the conclusion of thenail driving operation. To this end the downwardly extending arm of thelatch lever 106 is provided with a pivoted switch cam 114 [with whichcooperates a pin 116 set in a collar 118 fast upon the side rod 12. Thecam 114 is so disposed'that when the side rod and the pin 116 are moveddownwardly the cam piece at its lower end without affecting the posltionof the latching lever 106. In the upward movement of the side rod,however, the pin 116 chcounters the other face of the cam 114 and actstoswing the latching lever 106 in a contra-clockwise direction thuselevating its horizontal arm and releasing the pin 110 in the lever 98.This movement of the lever 106 takes place in opposition to a spring 120interposed between it and a post on the bracket 102.

As soon as the arm of the latching lever 106 is elevated the forward orhandle end of the lever 98 moves inwardly carrying the pin 110 beneaththe arm of the lever and permitting the lever 98 to swing outwardly atits rear end thereby turning the heel and toplift holder to carry thetoplift clamping arms beneath the die plate. This feature ofconstruction is important in that the oscillation of the latching leveris rapidly effected and if the catch were not promptly moved out ofrange of the lever 106 it would be caught again by the lever 106 beforethe slower moving holder would permit it to move. I

In order to cushion the action of the holder, dash pot mechanism isprovided including a tube 122 set in the machine frame and having itsplunger connected by a link 124 to an adjustable clamping piece 126 fastupon the rod 96.

The attaching nails are supplied to the die block by a loader block 130carried in an oscillating loader arm 132 pivotally mounted uponthe rightside rod 12. The arm 132 of the loader block extends outwardly beyondthe block 130 and is provided with a handle 134 by which the operatorswings it from the nail receiving position to nail delivering positionabove the passages in the die block. A plate covers the lower face ofthe loader block 130 and prevents the nails from falling out of itduring its movement into delivering position.

Safety mechanism is provided for preventing a second movement of thenail loader nto dellvermg posltlon after the passa es in the die blockhave once been sup-' plled with nails and before these nalls have Ipositively against movement from nail re- The locking pm 138 1s ceivingposition. connected to a flexible wire 142 inclosed in aspring tube 143,see Fig. 3, which extends to an angular bracket 144 located at the rearof the die plate 4 above the heel and to-plift holder. The bracket 144is provided with bearings for a-vertically movable rod 146, see Fig. 4.The rod 146 is connected to one arm of a bell crank lever 148 pivotallymounted upon an ear on the bracket 144. Thedownwardly extending arm ofthe lever 148'lcarries a pivoted tripping piece 150. The tripping piece150 is arranged to yield when moved in one direction, 2'. 6., up-

moved in the opposite direction.

The tripping piece 150 is operated bya tripping plate 152 secured to"the rearside of the heel and toplift holder. A spring encircles the rod146' beneath the arm of the lever 148, normally lifts the rod andthrough the flexible connection depresses the locking pin 138, thesupposition beingthat one load ofnailshas now been delivered to the dieplate. It is therefore impossible to move the loader arm until thelocking pin 138 has been lifted and this is effected through themechanism above described by swinging the heel and toplift holder, firstto carry the toplift holdlng arms 90 into position be neath the dieplate, and then in the opposite direction to carry the heel holding arms7 into operative position. In these two movements it will be seen thatthe tripping plate 152 is first carried beneath the pivoted trippingpiece 150 while the latter moves idly and is then moved reverselyengaging the tripping piece 150 andgswinging the horizontal arm of thelever 148 downwardly, thus lifting the locking pin 138 as will beapparent. The loader arm is displaced immediately so as to carry thelocking'block 136 out from beneath the locking pin 138. This is efiectedby a spring pressed plunger carried in the lower end of a ratchet lever156 the purpose of which will be presently described.

The bracket'102 carries a pair of vertical rods 160 which carrry attheir upper ends a stationary frame 162 shaped to constitute ahorizontal g'uideway. Inclined bracing rods 164 extend between the rods160 and the forward end of the frame 162. The frame 1627has parallelflanges upon which slides a carriage 168 having a handle 170 arranged tobridge its forward ends. The carriage isshaped to receive a nailcarrying block provided with parallel rows of perforations to receivenails, and the block is held in the carriage bysuitable clamping means.The nail supplying block is not shown herein,- 'as it forms no part ofthe present invention, but is shown, described and claimed inapplication, 'Serial No. 81,873, heretofore mentioned, towhich-reference may be made for a full understanding of its details. Thecarriage 168 and the nail block therein are moved intermittently forwardto discharge'one row of nails after another to openings in the frame 162which are caused to register successively with rows of openings in thenail carrying block. As herein shown, this is effected by mechanismoperated by the loader arm 132. The car riage 168 is provided at oneside of its lower face with a rack 202, and the ratchetv lever 156 ispivotally mounted on a bracket 204 secured to one of the rods 160 andcarries at its upper end a dog 206 which cotiperates with the teeth ofthe ratchet 202. The bracket 204 is provided with a rearward extensionhaving a casing 208 for a spring pressed pin which tends normally tothrow the lower end of the ratchet lever forward. When the loader armis-moved outwardly into nail receiving position, as shown in Fig. 3, itencounters the lower end of the ratchet lever 156, swinging the samerearwardly and advancing the carriage 168 that distance required todischarge a load of nails from the nail block into the openings in thecarriage. :The nails pass from these openings through thetubes 184 tothe foot plate 252, and through holes in this plate to the loader. Whenthe loader arm 132 has been moved to the end of its path it is locked inposition by the locking pin 138 as already explained.

In addition to the safety mechanism already described,which preventsmovement of the loader arm 132 before the heel and toplift holder hasbeen turned to position a heel for nailing, there is also providedsafety mechanism for preventing movement of the ratchet lever 156 toadvance the nail carrying block and discharge a row of nails until afternails already supplied to the loader have been delivered to "the nailblock 4. To this end the loader arm is provided with a cam 220 which isarranged to cooperate with a pin 222 set in a slide bar 224 for causinghorizontalreciprocation of the bar. The bar 224 carries upon its rearside a pin 226 arranged to engage a bell crank lever 228 pivotallymounted in the bracket 144 and of similar construction to the lever 148already described and shown in Fig. 4. The lever 228 has a flexibleconnection through the spring tube 230 to a locking pin 232 mounted toslide in the bracket piece 204 and arranged to enter a socket formed inthe side of the ratchet lever'156. The ararm sufiicient to discharge thenails carried thereby to the die block;

The operation of the machine willbe apparent from the foregoingdescription and may be outlined as follows: The machine comes to restwith its elements in the positions shown in Fig. 1, except that thetoplift clamping. arms 90 instead of the heel holding arms 7' arelocated beneath the die block and the lever 98 occupies its inner orleft hand position. As shown inFig. 1 the bar 54 has been moved upwardlyand latched in position with the spring 42 under compression. Theoperator first inserts a toplift between the arms 90 and. then swingsthe lever 98 outwardly thus bringingthe heel holding arms 7 beneath thedie block and latching the lever 98 by the lever 106 7 in the positionshown. This movement of which they pass to the loader arm. The

shoe is then placed upon the jack 6 and then moved rearwardly to carrythe heel seat of the shoe beneath the heel to be attached and in thismovement of the jack the safety lever 74 is moved to release thestarting mechanism. The operator next depresses the treadle 7 0 whichfirst moves the dog 62 to release the bar 54 permitting the spring 42 toexpand and elevate the jack to effect the. measuring operation.Continued depression of the treadle 7 0 trips the main clutch of themachine whereupon the jack carriage support is elevated to apply anincreased pressure to the work, the drivers acting to drive theattaching nails and the cross head is then elevated to its initialposition.- During this latter movement the bar 54 is again elevated andthe latching lever '106 is oscillated to release the lever 98 andspanked in place whereupon the completely h'eeled shoe may be removedfrom the machine in readiness for a repetition of the cycle.

Having thus described my invention, I claim as new and desire to secureby Letters Patent of the United States:

1. A machine of the class described, having, in combination, a movableheel holder, a loader, and a locking device for the loader including apin, a flexible operating element connected to the pin, and meanscontrolled by the holder for moving longitudinally the flexibleoperating element.

2. A machine of the class described, having, in combination, arelatively movable work support and die plate, and automatic measuringmechanism including a coiled spiral spring and means for holding saidspring under compression, and for thereafter permitting the spring toexpand and elevate the work support to effect the measuring operation.

3. A machine of the class described, having, in combination, arelatively movable' I WOI'k support and d1e plate, and automaticmeasuring mechanism including a tube arranged to be moved in onedirection by the power of the machine, and a spring coiled about thetube and compressed When the tube is so moved, said spring effecting themeasuring operation.

4:. A machine of the class described, having, in combination, arelatively movable Work support and die plate, and automatic measuringmechanism including telescopic members and a spring coiled about said.

matic measuring mechanism including a starting lever, and means forpreventing the operation of the starting lever When the jack is out ofWork pressing position.

6. A machine of the class described, having, in combination, a heel andtoplift holder, a lever for moving the holder in one direction, a springfor moving the holder in the other direction, a latching lever carrying'a svvitch cam, and a reciprocatory actuating member constructed andarranged to move the switch cam idly during its reciprocation 1n onedlrection and to move the latching lever through the switch cam dur inits reciprocation in the other direction.

. A machine of the class described, having, in combination, a heel andtoplift holder, a lever connected to the holder and having relativelymovable parts one of hich carries a latch piece, and an automaticallyoperated latch lever, the latch piece carrying part of the lever beingmovable independently of the holder.

8. A machine of the class described, having, in combination, a jack, aback gage arranged to engage ashoe supported on the jack for determiningits position relatively to a heel to be attached to the shoe, and adjusting means for the gage including a shaft extending forwardly andhaving a hand 7 Wheel located at one side of the shoe.

J 9. A machine of the class described, having, in combination, avertically movable jack for a shoe, a pivotally mounted holder for heelsand toplifts, means tending normally to swing the holder to topliftpresenting position, manually operated means for moving and latching theholder in heel presenting position, and automatic means for releasingthe holder simultaneously with the movement in one-direction of thejack.

10. A machine of the class described, having, in combination, a driverhead and-side rods, a pivoted holder for heels and toplifts,

and a device for latching the holder under spring tension arranged to beoperated by one of the side rods for releasing the holder.

11. A machine of the class described, having, in combination, a driverhead and side rods, a pivoted holder for heels and toplifr'ts, atwo-part lever and an oscillatory latching device cooperating to holdthe holder under spring tension, and means for moving one part of thelever out of range of the latching device When the latter is moved toreleasing position.

12. A machine of the class described, having, in combination, a jackmovable horizontally to and from operative position, automatic measuringmechanism, manually-con trollable devices for initiating the operationof said mechanism, and means for preventing the operation of saiddevices While the jack is out of its operative position.

13. A machine of the class described, having, in combination, heelattaching mechanism, a jack movable to and from operative position,automatic measuring mechanism, means for initiating the operation ofsaid mechanism and for starting the machine, in cluding a singlecontrolling member, and means for preventing the operation of said'member While the jack'is out of its operative position.

14. The combination of heel attaching mechanism, a jack movable into andout of operative position, automatic measuring.

mechanism, a detent for preventing the operation of the measuringmechanism, a manually operable member for starting the machine and fortripping the detent, and means for obstructing movement of said memberuntil the jack is moved into operative position.

15. A machine of the class described, having, in combination, a movablenail block, a movable holder for heels to be nailed, means for advancingthe nail block to deliver successive loads of nails, and a lockingdevice for said means arranged to be controlled by the movement of theholder.

16. A machine of the class described, having, in'combinatiom-a movablenail block,

a loader, a heel holder, means for advancing thenail block to deliversuccessive loads of nails to the loader, and a pair of locking devicesfor said means, one arranged to be controlled by the movement of theholder and the other by the loader.

'17. A machine of the class described, having, in'combination, nailsupplying means, a loader, a lock for the loader, and a movitbl}: heelholder arranged to control said 18. vA'machine of the'class described,having,pin combination, a movable nail block, a loader, means operatedby the loader for advancing the nail block to deliver successive loadsof nails, a movable heel holder,

1 ,esopoo and a locking device operating on the loader and controlled bythe holder.

19. A machine of the class described, having, in combination, a movablenail block, a feeding lever for advancing the block to deliversuccessive loads of nails, a loader, a heel holder for the heel to beattached, a lock for the feeding lever controlled by the loader so thatthe nail block can be advanced only after a load of nails has beendischarged by the loader, and a lock for the loader controlled by theholder so that the loader can be moved only after a heel has beenpresented.

20. In a heeling machine, the combination with nailing mechanism, ofmechanism for transferring nails to the nailing mechanism, a movablework-engaging member coopen ating with the nailing mechanism, and meanscontrolled by said member for preventing the delivery of more than onecharge of nails for a single operation of the nailing mechanism.

21. In a heeling machine, the combination with a nail block, of amovable loader mechanism for delivering nails to the block, a movableholder cooperating with the nail block, and means controlled by theholder for limiting the movement of the loader mechanism.

22. In a heeling machine, the combination with nailing mechanism, ofmechanism for transferring nails to the nailing mechanism, awork-engaging member cooperating with the nailing mechanism in aplurality of positions, and means controlled by the workcngaging memberfor preventing the delivery of more than one charge of nails until saidmember has occupied a plurality of positions.

23. In a heeling machine, the combination with a nail block, of amovable loader mech anism for delivering nails to the block, a movableholder cooperating with the nail block, and means controlled by theholder for preventing the cooperation of the loader and block before thenails delivered have been discharged from the block.

having heel and top lift holders movable into cooperation With thenailing mechanism, and a stop movable with the swing plate, said stopcooperating with the loader mechanism when the top-lift holder 00:operates with the nailing mechanism and being ineffective when the heelholder cooperates with the nailing mechanism.

25. In a heeling machine, nailing mechanism, nail distributingmechanism, mechanism for receiving nails from the distributing mechanismand transferring them to the nailing mechanism, the movement of thetransfer mechanism controlling the distributing mechanism, and means fordelaying the operation of the distributing mechanism until a fulldelivery movement of the transfer mechanism has been made.

26. In a heeling machine, nailing mechanism, nail distributingmechanism, mechanism for receiving nails from the distributing mechanismand transferring them to the nailing mechanism, a member movable withthe transfer mechanism for initiating the operation of the distributingmechanism, and a member connected to the distributing mechanism withwhich said initiating member contacts actively only after the transfermechanism has completed its delivery movement.

27. In a heeling machine, nailing mechanism, nail distributingmechanism, mechanism for receiving nails from the distributing mechanismand transferring them to the nailing mechanism, means for preventing thedelivery of more than one charge of nails to the nailing mechanismbetween successive operations thereof, and means for preventing deliveryof more than one charge of nails to the transfer mechanism betweensuccessive deliveries to the nailing mechanism.

In testimony whereof I have signed my name to this specification.

JOSEPH H. POPE.

